lst = [12,'12',12,13,'abc']
print(lst.count(12))
print(lst.index('12'))
print(len(lst))
lst.append(14)
print(lst)
lst.extend('18')
print(lst)
lst.insert(0,100)
print(lst)
# [100, 12, '12', 12, 13, 14, '1', '8']
lst.pop(0)
print(lst.pop(0))
# [12, '12', 12, 13, 14, '1', '8']
print(lst)
lst.remove("abc")
print(lst)
# 删除第一个
lst.remove(12)
print(lst)
lst.reverse()
print(lst)
lst2= [1,2,4,5,11,3,7,56,32,10]
lst2.sort()
# print(lst2)
print(lst2.sort(reverse=True))